Arlington County, Virginia, police are searching for a man they say was involved in a murder at a house party early Sunday morning.

About 3:30 a.m., officers found 23-year-old Michael Gray, of Manassas, suffering from a gunshot wound at a house in the 6300 block of 29th Street North in the Williamsburg neighborhood, police said. They immediately started performing CPR on Gray.

He was taken to Inova Fairfax Hospital, where he was pronounced dead.

Arlington County police are looking for 37-year-old Jason Allen Johnson, of D.C. He is wanted for murder for "his role" in Gray's killing, police said.

Johnson is considered armed and dangerous, according to police. He is described as a black man who is 5 feet 5 inches and weighs about 145 pounds. Police said he was last known to be headed toward Maryland.

Investigators said the shooting stemmed from a dispute at the house party.

Anyone with information about Johnson's whereabouts is asked to call 911 immediately and should not approach him.